diff --git a/internal/sm2ec/generate.go b/internal/sm2ec/generate.go
index 7c9a5b6..d94602b 100644
--- a/internal/sm2ec/generate.go
+++ b/internal/sm2ec/generate.go
@@ -142,7 +142,7 @@ const tmplNISTEC = `// Copyright 2022 The Go Authors. All rights reserved.
 {{ end }}
 package sm2ec
 import (
-	"github.com/emmansun/gmsm/sm2ec/fiat"
+	"github.com/emmansun/gmsm/internal/sm2ec/fiat"
 	"crypto/subtle"
 	"errors"
 	"sync"
diff --git a/internal/sm2ec/sm2p256.go b/internal/sm2ec/sm2p256.go
index 53ece0e..b76b6c8 100644
--- a/internal/sm2ec/sm2p256.go
+++ b/internal/sm2ec/sm2p256.go
@@ -10,7 +10,7 @@ package sm2ec
 import (
 	"crypto/subtle"
 	"errors"
-	"github.com/emmansun/gmsm/sm2ec/fiat"
+	"github.com/emmansun/gmsm/internal/sm2ec/fiat"
 	"sync"
 )